diff options
Diffstat (limited to 'gdb/infcall.c')
| -rw-r--r-- | gdb/infcall.c | 69 |
1 files changed, 27 insertions, 42 deletions
diff --git a/gdb/infcall.c b/gdb/infcall.c index d6a8de3..b603cf6 100644 --- a/gdb/infcall.c +++ b/gdb/infcall.c @@ -403,6 +403,13 @@ run_inferior_call (struct thread_info *call_thread, CORE_ADDR real_pc) return e; } +/* A cleanup function that calls delete_std_terminate_breakpoint. */ +static void +cleanup_delete_std_terminate_breakpoint (void *ignore) +{ + delete_std_terminate_breakpoint (); +} + /* All this stuff with a dummy frame may seem unnecessarily complicated (why not just save registers in GDB?). The purpose of pushing a dummy frame which looks just like a real frame is so that if you call a @@ -440,9 +447,7 @@ call_function_by_hand (struct value *function, int nargs, struct value **args) struct cleanup *args_cleanup; struct frame_info *frame; struct gdbarch *gdbarch; - struct breakpoint *terminate_bp = NULL; - struct minimal_symbol *tm; - struct cleanup *terminate_bp_cleanup = NULL; + struct cleanup *terminate_bp_cleanup; ptid_t call_thread_ptid; struct gdb_exception e; const char *name; @@ -757,13 +762,7 @@ call_function_by_hand (struct value *function, int nargs, struct value **args) call. Place a momentary breakpoint in the std::terminate function and if triggered in the call, rewind. */ if (unwind_on_terminating_exception_p) - { - struct minimal_symbol *tm = lookup_minimal_symbol ("std::terminate()", - NULL, NULL); - if (tm != NULL) - terminate_bp = set_momentary_breakpoint_at_pc - (gdbarch, SYMBOL_VALUE_ADDRESS (tm), bp_breakpoint); - } + set_std_terminate_breakpoint (); /* Everything's ready, push all the info needed to restore the caller (and identify the dummy-frame) onto the dummy-frame @@ -776,8 +775,8 @@ call_function_by_hand (struct value *function, int nargs, struct value **args) discard_cleanups (inf_status_cleanup); /* Register a clean-up for unwind_on_terminating_exception_breakpoint. */ - if (terminate_bp) - terminate_bp_cleanup = make_cleanup_delete_breakpoint (terminate_bp); + terminate_bp_cleanup = make_cleanup (cleanup_delete_std_terminate_breakpoint, + NULL); /* - SNIP - SNIP - SNIP - SNIP - SNIP - SNIP - SNIP - SNIP - SNIP - If you're looking to implement asynchronous dummy-frames, then @@ -878,7 +877,7 @@ When the function is done executing, GDB will silently stop."), name); } - if (stopped_by_random_signal || !stop_stack_dummy) + if (stopped_by_random_signal || stop_stack_dummy != STOP_STACK_DUMMY) { const char *name = get_function_name (funaddr, name_buf, sizeof (name_buf)); @@ -932,30 +931,17 @@ When the function is done executing, GDB will silently stop."), } } - if (!stop_stack_dummy) + if (stop_stack_dummy == STOP_STD_TERMINATE) { + /* We must get back to the frame we were before the dummy + call. */ + dummy_frame_pop (dummy_id); - /* Check if unwind on terminating exception behaviour is on. */ - if (unwind_on_terminating_exception_p) - { - /* Check that the breakpoint is our special std::terminate - breakpoint. If it is, we do not want to kill the inferior - in an inferior function call. Rewind, and warn the - user. */ - - if (terminate_bp != NULL - && (inferior_thread ()->stop_bpstat->breakpoint_at->address - == terminate_bp->loc->address)) - { - /* We must get back to the frame we were before the - dummy call. */ - dummy_frame_pop (dummy_id); - - /* We also need to restore inferior status to that before the - dummy call. */ - restore_inferior_status (inf_status); - - error (_("\ + /* We also need to restore inferior status to that before + the dummy call. */ + restore_inferior_status (inf_status); + + error (_("\ The program being debugged entered a std::terminate call, most likely\n\ caused by an unhandled C++ exception. GDB blocked this call in order\n\ to prevent the program from being terminated, and has restored the\n\ @@ -963,9 +949,11 @@ context to its original state before the call.\n\ To change this behaviour use \"set unwind-on-terminating-exception off\".\n\ Evaluation of the expression containing the function (%s)\n\ will be abandoned."), - name); - } - } + name); + } + else if (stop_stack_dummy == STOP_NONE) + { + /* We hit a breakpoint inside the FUNCTION. Keep the dummy frame, the user may want to examine its state. Discard inferior status, we're not at the same point @@ -992,10 +980,7 @@ When the function is done executing, GDB will silently stop."), internal_error (__FILE__, __LINE__, _("... should not be here")); } - /* If we get here and the std::terminate() breakpoint has been set, - it has to be cleaned manually. */ - if (terminate_bp) - do_cleanups (terminate_bp_cleanup); + do_cleanups (terminate_bp_cleanup); /* If we get here the called FUNCTION ran to completion, and the dummy frame has already been popped. */ |